Not exactly info, more of a rumour but I just went on
www.nintendo.com.au and searched Zelda to see if there was an information thing for it, and there is. I noticed two things on it... The Number of Players field has not been filled in, but when the Wind Waker had been just announced it said one. I also noticed "hunt for treasure.". Could this be part of the storyline or gameplay? Who knows, but it sure is interesting!